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huf: increase threshold detection of poorly compressible data

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This commit is contained in:
Yann Collet 2018-06-21 18:32:38 -07:00
parent e30f13bde0
commit 698fd00afb
1 changed files with 1 additions and 1 deletions
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lib/compress/huf_compress.c
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@ -670,7 +670,7 @@ static size_t HUF_compress_internal (
/* Scan input and build symbol stats */ /* Scan input and build symbol stats */
{ CHECK_V_F(largest, HIST_count_wksp (table->count, &maxSymbolValue, (const BYTE*)src, srcSize, table->count) ); { CHECK_V_F(largest, HIST_count_wksp (table->count, &maxSymbolValue, (const BYTE*)src, srcSize, table->count) );
if (largest == srcSize) { *ostart = ((const BYTE*)src)[0]; return 1; } /* single symbol, rle */ if (largest == srcSize) { *ostart = ((const BYTE*)src)[0]; return 1; } /* single symbol, rle */
if (largest <= (srcSize >> 7)+1) return 0; /* heuristic : probably not compressible enough */ if (largest <= (srcSize >> 7)+4) return 0; /* heuristic : probably not compressible enough */
} }
/* Check validity of previous table */ /* Check validity of previous table */